Projecting apparatus.



I. KITSEB.

PBOJBGTING APPARATUS.

APPLIUATION FILED 1111.26, 1912.

Patented Aug. 19, 1913.

ISIDOR KITSEE, 0F PHILADELPHIA, PENNSYLVANIA.

PROJ' ECTING- ,APPARATUS `Specification of Letters Patent.

Patented Aug. 19, 1913.

Application led January 26, 1912. Serial'No. 673,579.

To all whom t may concern:

Be it known that'I, ISIDOR KITSEE, citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements in'Projecting Apparatus, of which the following is a specification.

My invention relates to anv improvement exhibiting photographicpictures.

It is unnecessary here to relate all the achievements or experimentsmade in photography with the aid of colored sc reens commonly calledcolor photography. It is only -necessary to state that all results sofar have this disadvantage that the different color-rays are abruptlybrought in View of the picture to be taken and abruptly taken therefromand ra s of other colors abruptly substituted' there or.

With the arrangements of today, the radual rise and fall of theintensity o one color ray and its merging in the succeeding color-ray isimpossible and it is the aim of my invention to enable persons versed inthe art to so adjust the source of rays that the above disadvantage isentirely eliminated.

My invention also contemplates the eX- hibiting of pictures in a mannerso that the advantages formerly gained should also be maintainedduringthe time of exhibiting. the same.

For the purpose of illustrating one form my invention may take, I havereference to the accompanying drawing, in which- Figure l is aperspective viewof a projecting machine illustrating lhere the light andfilm mechanism and Fig. 2 is a diagram of the electrical circuit.

Persons versed in the art of electric science well understand that inthe rapid.-

lighting and extinguishing of electric lamps, the glow of the electrodesor filaments still persists-to a certain extent-even after the circuitis broken and when a series of lamps are successively connected to anddisconnected from a circuit in rapid succession, the rays of thepreceding and cut-out lamp will always commingle with the rays ofthelamp following, for a short period. As is known to4 those skilled in theart 'of electric lamps, the time interval of after glow that is the timeof glow after the current has been reduced or cut off, can be madeanything desired, within limits. This for the reason that, in the caseof incandescent lam s for example, the filaments may be of di erentsizes or thicknesses, so that they hold their heat for differentlengths'of time, and therefore the after for different lengths of time.

I have here shown incandescent lamps as the source of light. In presentdays', where the art'of metallic filaments is so well developed, suchlamps may be used to advantage, but it is obvious that other types maybe used. As is self-evident, in the type shown in the drawing, that is,incandescent type,`the globe has to be colored to suit requlrements. p

When, with the arrangement as illustrated, the pictures are projectedin, such rapid succession as is required for the purpose of movingpictures, then the advanta e of my invention is most apparent, for t ereason that here the merging of the rays of the different colors,following each other in rapid' succession, will be most' apparentin theresultant effect of the picture. A second advantage of my invention liesin the fact that I project through each picture unit of a certain colorvalue light of the color of such color value derived from a periodicallyenergized# source of light of such color as distinguished from the useof a continuously operating source of light projected throughdifferent'color screens in lsuccession.

Coming now to the projecting of photographic pictures in the well knownart of moving pictures, which is clearly illustrated in'Figs. 1 and 2,in Fig. l, a is the projection apparatus, havingl a suitable lens b. c',d and e are three sources of light, of which c may be red, al yellow ande blue.

These lights vare here shown of the well known type of Aincandescentlamps, but it is obvious .that here also this type 'may be relaced byany other suitable type. The

Elm with the pictures thereon is here designated as f actuated bysprocket g. This sprocket is adapted t0 be put in motion with vthe aidof the shaft j. On this shaft is positioned the commutator comprisingthe three conducting segments k', Z and m. All of these segments are inelectrical contact with theshaft and against this shaft rests thebrushpp. The other parts of the commutator consist of the insulatingmaterial 'n'.

The lm has thereon a series of picture units, neighboring picture unitsbeing of glow persists 60 different color values; and as each pictureunit is presented for exposure a source of light of correspondin coloris energized.

The modus opera/n, v1 is as follows :-When' ments is brought lin contactwith one of the brushes, thereby connecting one of the lights into thecircuit, here shown as an incandescentlamp. It is now supposed thatduring one revolution of the sprocket wheel three pictures are lbroughtsuccessively to view and vit is taken for granted that the commutator-(positioned onV the same shaft) is also making one revolution during onerevolution of the sprocket wheel and that thereby successively all ofthe three segments come in contact with their respective brushesand itis also taken for granted that the first segment closes the circuitincluding the lamp giving out red rays, the second segment with the lampgiving out lyellow rays and the third segment with the lamp giving outblue rays. If now the sprocket wheel rapidly revolves, the resultanteffect will not only be a change from one color to a second color, butalso a graduation of this change through the persistence of the glow ofone lamp at the time lamp commences to give out light rays of its owncolor. It is obvious that instead of entirely breaking the lamp circuit,a resistance 'of high value may be thrown in this circuit.- Thisresistance will reduce the fiovv of current in the circuit to such aminimum that the lamp will only' slightly glow and the degree of thisglow can then be regulated i and is in inverse proportion to the valueof the resistance. Instead, therefore, of eX- tinguishing lthe light,the intensity of the light may only be reduced.l In the case where theglow of one lamp ersists until or after the beginning of the g ow of thenext lamp the color values of the correspondingly presented pictureunits are correspondingly modified by the picture taking or'cameraapparatus.

Having now described my invention, what I4 claim as new and desiretosecure by Letters Patent is 1. The combi/nation with a film compris.

ing a pluralityof picture units, of a .plurality of sources of light lofdifferent colors, means for moving said film with respect to saidsources of light, and means for eX- tinguishing and energizing saidlight sources in'v succession, one light source continuing to producelight an interval of time after the beginning of light deliveryby asucceeding source of light. i 2.' In apparatus of the characterdescribed,

ia plurality of electric lights, each producing light .of a-colorvdifferent from the colors of the other electric lights, a movingpicture that the succeeding film, means for advancing said film, andmeans operatively related with said film advancing means for controllingsaid electric lights in a predetermined order.

3. In apparatus of the'character described, a plurality of electriclamps, each producing light of -a color different from the colorsproduced by the other electric lamps, a moving picture film, and meansfor venergizing said electric lamps in succession in synchronism withthe movement of said film.

4:. In apparatus of the character described, the combination with amoving picture film, of a plurality of stationary electric lights, eachadapted to Iproduce light of a color different from the colors producedby the other electric lights, and means for energizing said electriclights in succession in synchronism with the movement of said film.

5. In ap aratus of the character described, a picture film comprising aplurality of picture units, neighboring picture units having differentcolor values, a plurality of sources of light, each source deliveringlight of a color different from the light delivered by the othersources, means for rendering said sources active in synchronism with themovement of the film, each picture unit of said film being subjected tolight of-'a color the same as the color value of said picture unit.

6. In apparatus of the `character described, a moving picture filmcomprising a plurality of picture units, neighboring picture unitshaving different color values, a plural-ity of electric lights, eachdelivering light of a color different from the color delivered by the fVthe light delivered' by the other electric lights, and switching meansmoving in definite relation with respect to said-film feeding means forenergizing said electric lights in succession.

8. In apparatus for projecting moving pictures in substantially naturalcolors without theuse of moving color screens, the combination with amoving picture fi1in,'ofy a vplurality of stationary sources of light,each source delivering a color of light different from the color loflightdelivered by the other source, means for moving said iilm, andmeans'movable in definite relation with said film moving means forrendering said light sources active in succession and in step with themovement of saidl film.

9. In apparatus for projecting moving pictures in substantially naturalcolors without moving color screens, the combination with a moving.picture film, of means for moving said lilm, a commutator moving indefinite relation with respect `to said film moving means, and aplurality of electric lights controlled in succession by saidcommutator, each electric light delivering lightof a color'differentfrom the color delivered by the other electric lights.

l0. The method of projecting moving pictures in substantially theirnatural colors,

which consists in rapidly moving a seriesof picture units, neighboringpicture units of the series differing from each other in their colorvalues, energizing a plurality of light sources in succession and at arate corresponding With the rate of movement of the picture umts, eachsource of light delivering a light of color dilerent from the colorsdelivered by the other sources of light, and subjecting each pictureunit to a light of color corresponding With the color value of thatpicture unit.

subjecting each picture unit to a lightvof4 color corresponding withvthe color value of that picture unit, and causing the light vfrom eachsource to persist for a predetermined interval of time and to minglewith the light delivered by another source. v

In testimony whereof I atlix my signature in presence of tWo Witnesses.

ISIDOR KITSEE. Witnesses:

MARY C.' SMITH, JN0. Y. KING.

